CN113533812A

CN113533812A - Electric meter box

Info

Publication number: CN113533812A
Application number: CN202110801311.8A
Authority: CN
Inventors: 魏章波; 林国庆; 刘月丽; 乐红强; 洪少可
Original assignee: Ningbo Sanxing Medical and Electric Co Ltd
Current assignee: Ningbo Sanxing Electric Co Ltd; Ningbo Sanxing Medical and Electric Co Ltd
Priority date: 2020-12-31
Filing date: 2021-07-15
Publication date: 2021-10-22
Also published as: WO2022142341A1

Abstract

The invention discloses an electric meter box which comprises a base (2) and an electric meter (1) connected with the base (2), wherein the electric meter (1) is provided with a first side (11) and a second side (12) which are arranged at intervals, the first side (11) is connected with the base (2) through a plug-in structure, and the second side (12) is connected with the base (2). The first side of ammeter passes through grafting structure with the base and links to each other, during the installation ammeter, pegs graft first side and the base of ammeter earlier, can be spacing to the position that needs with the first side of ammeter like this fast, and the installation effectiveness of ammeter is higher like this.

Description

Electric meter box

Technical Field

The invention relates to the technical field of electric meter boxes, in particular to an electric meter box.

Background

The electric meter box is a device for assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a shell according to the electrical wiring requirements. The ammeter case generally includes the shell that has the chamber of holding, sets up base and ammeter in holding the intracavity respectively.

For example, chinese utility model patent with application No. CN201320062767.8 (publication No. CN203084032U) discloses "an integrated electric meter box with conductive rail", which comprises a box body, conductive rails, an insulating partition plate, and a sliding electric energy meter, wherein the box body is provided with a conductive rail placing groove for placing the conductive rails, the conductive rails are provided with electric energy meter plugging devices, the conductive rail placing groove is covered with the insulating partition plate, and the insulating partition plate is provided with electric energy meter sliding clamping holes, electric energy meter plugging sliding electric holes, signal contacts and signal buses; the insulation partition board is provided with an insertion sliding type electric energy meter and a branch switch. The traditional wiring mode in the meter box is changed into a mounting mode of inserting sliding or inserting through a conductive rail, wiring is standard, the contact area of an electric connection point is larger, and the contact area can reach 70%; complicated and repeated manual wiring work is replaced by flow line production in a workshop, the comprehensive cost of production and construction of the electric meter box is greatly reduced, and the electric energy metering device is more standard and convenient to install. The electric energy meter is connected with the electric power plug device in a sliding and inserting mode, but the specific structure of the electric energy meter sliding and inserting connection is not disclosed. For another example, a chinese utility model patent with application number CN201620282852.9 (publication number CN205484486U) discloses a "plug-in electric meter", which includes a meter body and a base, the meter body is inserted into the base through a plug piece at the bottom of the meter body, and a retaining member is disposed on the plug piece. This structure can prevent to peg graft between back table body and the base not hard up each other, appears showing the phenomenon that the body breaks away from the base even, has guaranteed the grafting reliability of plug-in ammeter, but does not disclose the mounting structure of ammeter and other positions of base. After general ammeter inserted the base, in order to further ensure the stability of connecting, the both sides that the ammeter interval set up still pass through the fastener with the base respectively fixedly, and the fastener generally adopts the screw, has following problem: the ammeter needs to have two positions and adopts the fix with screw again after the position that the base corresponds aligns, and two positions are difficult to align immediately, leads to the installation effectiveness of ammeter lower like this.

In addition, electricity meters typically include a main body and an end cap for covering a port on the main body. For example, chinese utility model patent application No. C N201920988899.0 (No. CN210982561U) discloses an electric meter with an end cap, which includes a base and a cover, wherein the base is provided with an end button box, the cover is provided with an end cap covering the end button box, the cover is provided with a receiving cavity with a part recessed inwards, the end cap can rotate relative to the end button box by using one side edge adjacent to and parallel to the receiving cavity as a rotation axis, and the end cap can be partially located in the receiving cavity, the first end of the end cap along the axial direction of the rotation axis is rotatably disposed in the receiving cavity, the second end of the end cap along the axial direction of the rotation axis is provided with an extension column and a first elastic member which always makes the extension column have a tendency to move along the axial direction of the rotation axis towards the direction far away from the first end, the receiving cavity is provided with a mounting groove at the position corresponding to the extension column, the second end of the end cap is disposed on the corresponding side wall of the receiving cavity by the rotational fit of the extension column and the mounting groove, the end cover and the terminal button box are correspondingly provided with through holes for installing the first lead sealing piece. The installation of end cover in this patent to can prevent to make the condition that the end cover damaged when rigid installation end cover. If again, chinese utility model patent that application number is CN201920486238.8 (publication number is CN209821266U) discloses "an electric energy meter", this electric energy meter includes the base, establishes at the upper cover of base upper end, installs in the terminal seat of base afterbody and installs in the end cover of upper cover afterbody, the upper cover front end through the couple that both sides set up with the portion of hanging in the base is connected, the upper cover rear end is connected with the base through the screw in the screw seat of both sides, the connection that the end cover can overturn the upper cover afterbody, the end cover is equipped with lead sealing. The electric energy meter is simple in structure, the safety factor of the electric energy meter is greatly improved, the original lead sealing thread die sinking and lead sealing screw manufacturing are reduced, the production efficiency is improved, the production cost is greatly saved, and the integral appearance of the electric energy meter is more attractive. In the above patents, the end cap is connected to the end button box or the terminal base below the end cap through a lead seal (equivalent to a fastener described below), and the lead seal, such as a lead seal screw and a lead seal wire, needs to be opened first when the end cap is opened, and then the lead seal is separated from the end button box or the terminal base a bit by a bit.

Therefore, the electric meter box can be further improved.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide an electric meter box with higher electric meter installation efficiency aiming at the current situation of the prior art.

The second technical problem to be solved by the invention is to provide the electric meter box aiming at the current situation of the prior art, the end cover can be easily and conveniently opened, and the opening efficiency of the end cover is high.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides an ammeter case, includes the base and the ammeter that links to each other with the base, its characterized in that: the ammeter has first side and the second side that the interval set up, and this first side passes through grafting structure with the base and links to each other, and this second side links to each other with the base.

The plug structure may be various, and preferably, the plug structure includes a protrusion and a slot, which are engaged with each other, the protrusion is disposed on one of the first side of the electric meter and the base, and the slot is disposed on the other of the first side of the electric meter and the base.

The positions of the first side and the second side can be various, preferably, the first side is the bottom of an electric meter, the second side is the top of the electric meter, the bump is located at the bottom of the electric meter and extends up and down, the clamping groove is located at the position corresponding to the base and is opened upwards, and the top of the electric meter is connected with the base through a first fastener;

or, first side is the top of ammeter, the second side is the bottom of ammeter, the lug is located the top of ammeter and extends from top to bottom, the draw-in groove is located the position that the base corresponds and uncovered downwards, the bottom of ammeter with the base passes through first fastener and links to each other.

The connection structure of the second side of the electric meter and the base can be various, preferably, one of the second side of the electric meter and the base is provided with a positioning convex part, the other one of the second side of the electric meter and the base is provided with a positioning groove matched with the positioning convex part, and the second side of the electric meter and the base are connected through the positioning convex part and the positioning groove by a first fastener.

In order to stably connect the electricity meter with the base, the rear part of the electricity meter is provided with a pin inserted into a socket in the base, the pin extends out of the electricity meter, and the part of the pin positioned in the electricity meter is connected with the inner wall of the electricity meter through a screw. Through setting up the participate in, on the one hand participate in and can make ammeter and socket electricity be connected, on the other hand has also played the effect of fixed ammeter, makes the connection of ammeter and base more stable, and the ammeter installation back, does not expose and the security is higher for participate in.

The technical scheme adopted for further solving the second technical problem of the invention is as follows: the ammeter comprises a main body, an end cover and an elastic piece, wherein the end cover can be opened and closed relative to the main body, the first side of the elastic piece is installed in the main body, the second side of the elastic piece is exposed out of the main body and can be abutted against the inner wall of the end cover in a closed state of the end cover, and the elastic piece has a tendency of acting on the end cover forwards to flick the end cover.

In order to improve the resilience force of the elastic part, a convex rib extending towards the elastic part is arranged in the end cover, and the convex rib is abutted against the second side of the elastic part when the end cover is in a closed state. Therefore, when the end cover is closed, the compression amount of the elastic piece is large, correspondingly, when the end cover is opened, the resilience force of the elastic piece to the end cover is large, and the end cover is opened conveniently.

In order to prevent the end cap from being lost, the main body is provided with a port, the end cap is used for covering the port, one side of the end cap is rotatably connected with the main body and can be opened or closed relative to the main body, and the end cap is connected with the main body through a second fastening piece. Like this, the one end of end cover links to each other with the base, and the back is opened to the end cover, and one side of end cover still links to each other with the base to the end cover is difficult to lose, drop.

In order to detect the opening condition of the end cover, the main body is provided with a circuit board, and the circuit board is provided with a detection module for detecting whether the end cover is opened relative to the main body;

the elastic piece comprises a ring-shaped first part connected to the circuit board, a columnar second part extending back and forth, and a first elastic connecting wall connecting the first part and the second part, wherein the first elastic connecting wall has the tendency of supporting the second part forwards so that the second part can be bounced open the end cover;

the second part has at least two states, the top end of the second part is abutted against the inner wall of the end cover when the end cover is in the closed state, and the bottom end of the second part is positioned in the first part and is connected with the circuit board so that the detection module on the circuit board detects that the end cover is in the closed state;

when the end cover is in an opened state, the bottom end of the second part is separated from the circuit board, so that the detection module on the circuit board detects that the end cover is in the opened state.

Preferably, the ammeter comprises a main body, a key arranged on the main body and a circuit board capable of being triggered by the key;

the main body is provided with a through hole which is penetrated through from front to back, an extending part which extends backwards and an annular limiting part which is connected with the extending part and extends radially are formed at the through hole;

the press key comprises a press piece extending into the through hole and an elastic trigger part abutting against the bottom of the press piece, the elastic trigger part has the tendency of supporting the press piece forwards to disconnect the press piece from being electrically connected with the circuit board, and under the action of external force, the press piece can act on the elastic trigger part to enable the elastic trigger part to be electrically connected with the circuit board.

The pressing piece can be in various shapes, and preferably, the pressing piece is a T-shaped supporting column, the supporting column is provided with at least two elastic clamping feet which are oppositely arranged at the rear part of the supporting column, each elastic clamping foot penetrates through the annular limiting part and is buckled on the rear surface of the annular limiting part in a reverse mode, and the elastic clamping feet are used for abutting against the elastic triggering part. Therefore, during assembly, the press piece can be directly inserted into the main body to realize the installation of the key, and the press piece is prevented from being separated from the main body by connecting the seal ring with the press piece after being inserted into the main body, so that the operation is convenient and rapid; of course, in order to further prevent the pressing piece from falling out of the main body, a sealing ring connected with the pressing piece can be arranged on the basis of the elastic clamping foot.

The structure of the elastic contact part can be various, and preferably, the elastic trigger part comprises a ring-shaped first area connected on the circuit board, a columnar second area extending back and forth, and a second elastic connecting wall connecting the first area and the second area, wherein the second elastic connecting wall has the tendency of supporting the second area forwards to enable the second area to be away from the circuit board;

the second area has at least two states, and when the pressing piece acts on the elastic triggering part backwards, the bottom end of the second area triggers the circuit board;

when the pressing piece is not stressed, the bottom end of the second area is separated from the circuit board and does not trigger the circuit board;

the back of the annular limiting part is provided with a fixing part extending backwards, so that a gap between the annular first area and the columnar second area extending forwards and backwards can be sleeved on the fixing part.

Compared with the prior art, the invention has the advantages that: the first side of ammeter passes through grafting structure with the base and links to each other, during the installation ammeter, pegs graft first side and the base of ammeter earlier, can be spacing to the position that needs with the first side of ammeter like this fast, and the installation effectiveness of ammeter is higher like this.

In the scheme of improvement, through setting up the elastic component, when opening the end cover, the elastic component is toward popping open outward the end cover, can push open the end cover fast like this, and it is lighter to open the end cover relatively, and is also more convenient, in addition, because the elastic component supports the end cover, the end cover can not laminate with the base again like this, and the efficiency of opening the end cover like this is higher.

Drawings

FIG. 1 is a schematic perspective view of an electricity meter box according to an embodiment of the invention;

FIG. 2 is a schematic view of FIG. 1 with a portion of the housing removed;

FIG. 3 is a schematic view of the assembly of the meter and base of FIG. 2;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a schematic perspective view of an electricity meter according to an embodiment of the present invention;

FIG. 6 is a longitudinal cross-sectional view through the base and the meter;

FIG. 7 is another longitudinal cross-sectional view through the base and the meter.

FIG. 8 is another schematic perspective view of an electricity meter according to an embodiment of the present invention;

FIG. 9 is an exploded view of FIG. 8;

FIG. 10 is a schematic view from another angle of FIG. 9;

FIG. 11 is a cross-sectional view through the elastomeric member of FIG. 8;

FIG. 12 is a schematic perspective view of an end cap according to an embodiment of the invention;

FIG. 13 is a perspective view of an elastic member according to an embodiment of the present invention;

fig. 14 is a schematic view of fig. 13 from another angle.

FIG. 15 is a cross-sectional view through the key of FIG. 8;

fig. 16 is an enlarged schematic view of a portion a of fig. 15.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 7, a preferred embodiment of the electricity meter box of the present invention is shown. Fig. 8 to 16 are schematic diagrams of an electricity meter according to an embodiment of the present invention.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," and the like are used in the description and claims of the invention to describe various example features and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

This ammeter case is including having the shell 100 that holds the chamber, setting base 2 and the ammeter 1 in shell 100, and base 2 links to each other with ammeter 1, and ammeter 1 has first side 11 and the second side 12 that the interval set up, and this first side 11 links to each other through grafting structure with base 2, and this second side 12 links to each other with the position that base 2 corresponds. In this embodiment, the electric meter box has two rows of bases 2 and two electric meters 1.

Specifically, the plug structure includes a projection 13 and a slot 21, which are matched with each other in shape and size, the projection 13 is disposed on the first side 11 of the electricity meter 1, and the slot 21 is disposed on the base 2. In this embodiment, the first side 11 of the electric meter 1 located below is the bottom of the electric meter 1, the second side 12 is the top of the electric meter 1, the protrusion 13 is located at the bottom of the electric meter 1 and extends up and down, the slot 21 is located at a position corresponding to the base 2 and opens upward, and the top of the electric meter 1 is connected with the base 2 through a first fastener; in this embodiment, be located the ammeter 1 of top, first side 11 is the top of ammeter 1, and second side 12 is the bottom of ammeter 1, and lug 13 is located the top of ammeter 1 and extends from top to bottom, and draw-in groove 21 is located the position that base 2 corresponds and uncovered downwards, and the bottom of ammeter 1 links to each other through first fastener (not shown in the figure) with base 2. In other embodiments, the first side 11 and the second side 12 may also be the left side and the right side of the electricity meter 1, respectively, but the first side 11 and the second side 12 should be arranged so as not to affect the plugging of the pins 14.

Referring to fig. 5 and 6, to further facilitate positioning when mounting the electric meter 1, the second side 12 of the electric meter 1 has a positioning groove 15, the base 2 has a positioning protrusion 22 matching the positioning groove 15 in size and shape, and a first fastening member passes through the positioning protrusion 22 and the positioning groove 15 to connect the second side 12 of the electric meter 1 and the base 2. The first fastener is a screw (not shown) or a lead seal lock, which may be a lead seal screw or a lead seal wire. In other embodiments, the electricity meter 1 may have the positioning protrusion 22 and the base 2 may have the positioning groove 15.

The back of the electric meter 1 is provided with a pin 14 for inserting into a socket in the base 2, the pin 14 can electrically connect the electric meter 1 with the socket on one hand, and also plays a role in fixing the electric meter 1 on the other hand, and after the electric meter 1 is installed, the pin 14 is not exposed and has high safety. The pin 14 extends out of the electric meter 1 and the portion of the pin 14 located inside the electric meter 1 is connected to the inner wall of the electric meter 1 by means of a screw, which acts as a fixing during the insertion of the pin 14 into the socket in the base 2, so that the pin 14 is not easily detached from the inner wall of the electric meter.

The base 2 is provided with an elastic metal portion 4 (fig. 7), and the electricity meter 1 is provided with a metal contact portion 3 (fig. 5, fig. 7) for electrically connecting with the elastic metal portion 4 in a state where the electricity meter 1 and the base 2 are connected. The metal contact 3 is disposed in the electricity meter 1 and has an end exposed to the rear surface of the electricity meter 1, and the metal contact 3 is a 485 connection port. In other embodiments, it is also possible that the elastic metal part 4 is disposed on the electricity meter 1 and the metal contact part 3 is disposed at a corresponding position of the electricity meter 1. Specifically, the elastic metal portion 4 is an elastic metal thimble disposed on the base 2, the elastic metal thimble includes a needle tube 41 electrically connected to a signal line in the base 2, a needle 42 capable of moving forward and backward relative to the needle tube 41 and electrically connected to the metal contact portion 3, and a return spring 43 connecting the needle tube 41 and the needle 42, the needle 42 is exposed out of the front portion of the base 2, and the return spring 43 can support the needle 42 forward so that the needle 42 always tends to approach the metal contact portion 3; specifically, the head of the needle tube 41 has a stopper 411 for preventing the needle 42 from being ejected out of the needle tube 41. The elastic metal part 4 has two spaced-apart metal parts 3, the metal contact parts 3 have two spaced-apart metal parts 4, and the number of the elastic metal parts 4 corresponds to that of the metal contact parts 3, in other embodiments, the number of the elastic metal parts 4 and the number of the metal contact parts 3 may also be adjusted as required, and the elastic metal part 4 may also be a metal elastic piece or a metal elastic column.

The electricity meter 1 includes a main body 16, an end cap 17, an elastic member 18, a second fastening member 19, a pin 14, and the like.

Wherein the main body 16 has a port 162 and a circuit board 161, the circuit board 161 having a detection module for detecting whether the end cap 17 is opened or not with respect to the main body 16. Maintenance or theft of electricity, etc. may be performed through the operation port 162.

The end cap 17 can be opened and closed relative to the main body 16, the end cap 17 is used for covering the port 162, the end cap 17 is internally provided with a convex rib 171 extending towards the elastic element 18, and the convex rib 171 is abutted against the second side of the elastic element 18 when the end cap 17 is in a closed state, so that the elastic element 18 is pressed tightly, and the resilience force applied when the end cap 17 is opened is larger, thereby being convenient for quickly ejecting the end cap 17.

A first side of the elastic element 18 is mounted in the main body 16, a second side of the elastic element 18 is exposed out of the main body 16 and can be abutted against the inner wall of the end cover 17 in a state that the end cover 17 is mounted in place, and the elastic element 18 has a tendency to act forward on the end cover 17 to flick the end cover 17. Specifically, the elastic member 18 includes a ring-shaped first portion 181 attached to the circuit board 161, a columnar second portion 182 extending in the front-rear direction, and a first elastic connecting wall 183 connecting the first portion 181 and the second portion 182, the first elastic connecting wall 183 having a tendency to support the second portion 182 forward so that the second portion 182 has a spring-open end cap 17; the main body 16 is formed with a fixing seat 172 (fig. 11) extending inward at the opening, so that a gap between the annular first portion 181 and the cylindrical second portion 182 extending forward and backward can be sleeved on the fixing seat 172; the second portion 182 has two states, when the end cap 17 is in the closed state, the top end of the second portion 182 abuts against the inner wall of the end cap 17, and the bottom end of the second portion 182 is located inside the first portion 181 and connected to the circuit board 161, so that the detection module on the circuit board 161 detects that the end cap 17 is in the closed state; when the end cover 17 is in the open state, the bottom end of the second portion 182 is separated from the circuit board 161, so that the detection module on the circuit board 161 detects that the end cover 17 is in the open state, the bottom end of the second portion 182 may have a conductive sheet for electrically connecting or disconnecting with the detection module of the circuit board 161, or the circuit board 161 may have a micro switch which can be triggered by the bottom end of the second portion 182, and the micro switch is electrically connected with the circuit board 161. Thus, when a power theft event occurs, the end cap 17 is opened and can be detected by the detection module, which can also detect the open state of the end cap 17 by detecting a change in the position of the second portion 182, such as with a distance sensor. Preferably, the elastic member 18 may be made of silicone.

The end cover 17 is connected with the main body 16 through a second fastening piece 19, the second fastening piece 19 is an anti-falling bolt arranged on the end cover 17, the structure of the anti-falling bolt can adopt the prior art, namely after the anti-falling bolt is separated from the main body 161, the anti-falling bolt is still connected with the end cover 17 and is not easy to separate from the end cover 17, and the second fastening piece 19 can also adopt a screw.

The end cap 17 is rotatably connected to the main body 16 at one side thereof and can be opened or closed relative to the main body 16, and in this embodiment, the end cap has a rotating shaft 173 at one side thereof, and the main body 16 has a shaft hole 165 for the rotating shaft 173 to be inserted into. In other embodiments, a hinge may be used to pivotally connect the end cap 17 to the body 16. In order to provide a better hand feeling when the end cap 17 is used, one side of the end cap 17 is provided with a positioning part 172, and the main body 161 is provided with a first limiting groove 163 and a second limiting groove 164 which are arranged on the rotation path of the end cap 17 at intervals; when the end cover 17 is in a closed state, the positioning portion 172 is clamped in the first limiting groove 163; when the end cap 17 is in the open state, the positioning portion 172 is caught in the second catching groove 164.

The pins 14 extend out of the main body 16, and the part of the pins 14 in the main body 16 is connected with the inner wall of the main body 16 through screws (not shown in the figure), for example, two pins 14 are respectively connected with the relay body and the current transformer body in the main body 16, and by arranging the screws, the force applied when the pins 14 are plugged can be partially offset by the screws, so that the pins 14 are not easy to be disconnected from the relay body and the current transformer body in the main body 16.

The electricity meter 1 further includes a key 200 and the like provided on the main body 16.

The main body 16 has a through hole penetrating forward and backward, and an extending portion 165 extending backward and an annular limiting portion 166 connected to the extending portion 165 and extending radially are formed at the through hole.

The key 200 comprises a pressing member 201 extending into the through hole, and an elastic triggering portion 202 abutting against the bottom of the pressing member 201, wherein the elastic triggering portion 202 has a tendency of supporting the pressing member 201 forward to disconnect the electric connection with the circuit board 161, and under the action of an external force, the pressing member 201 can act on the elastic triggering portion 202 to electrically connect the elastic triggering portion 202 with the circuit board 161.

The pressing member 201 is a T-shaped supporting column, the supporting column has two elastic clamping legs 201a disposed oppositely at the rear portion thereof, each elastic clamping leg 201a passes through the annular limiting portion 166 and reversely buckles the rear surface of the annular limiting portion 166, and the elastic clamping leg 201a abuts against the elastic triggering portion 202. The rear of the T-shaped support post is a flat surface which facilitates uniform application to the second region 202b described below. Because the elastic clamping feet 201a are arranged, when the push button is assembled, the push piece 201 can be directly inserted into the main body 16 to realize the installation of the push button 200, and a structure for preventing the push piece 201 from being separated from the main body 16 by arranging a sealing ring and the like after the push piece 201 is inserted into the main body 16 is not needed, so that the operation is convenient and rapid.

The elastic trigger part 202 comprises a ring-shaped first area 202a connected to the circuit board 161, a columnar second area 202b extending back and forth, and a second elastic connecting wall 202c connecting the first area 202a and the second area 202b, wherein the second elastic connecting wall 202c has a tendency of supporting the second area 202b forward so that the second area 202b is away from the circuit board 161 and supporting the key 200 forward; the second region 202b has two states, when the pressing piece 201 acts on the elastic trigger part 202 backwards, the bottom end of the second region 202b triggers the circuit board 161; when the pressing member 201 is not stressed, the bottom end of the second region 202b is separated from the circuit board 161 without triggering the circuit board 161; a fixing portion 167 extending backward is disposed behind the annular limiting portion 166, so that a gap between the annular first region 202a and the cylindrical second region 202b extending forward and backward can be fitted on the fixing portion 167. In other embodiments, the resilient trigger portion 202 is a micro switch that can be electrically connected to or disconnected from the circuit board 161.

The working principle and the using process of the electric meter box of the embodiment are as follows.

When installing ammeter 1, insert the draw-in groove 21 of base 2 with the lug 13 of ammeter 1 in, insert the socket (not shown in the figure) in the base 2 with participating in 14, the positioning groove 15 of ammeter 1 aligns location convex part 22, connects the tank bottom of location convex part 22 and positioning groove 15 through first fastener to link to each other ammeter 1 and base 2, can fix a position fast through lug 13, the installation of ammeter 1 is more convenient and fast, and the installation effectiveness is higher. When the connection between the protrusion 13 and the slot 21 is relatively firm, the first side 11 does not need to be screwed during installation, so that one screw can be saved, and the cost is reduced.

When the connection between the protrusion 13 and the slot 21 is not firm enough, the first side 11 can be fixed by a fastener such as a screw. The elastic metal part 4 and the metal contact part 3 are matched, so that when processing or assembling errors exist, compensation can be achieved through the elastic metal part 4, contact between the elastic metal part and the metal contact part is stable, and poor contact is not prone to occurring.

After the pin 14 of the electric meter 1 is connected with the socket in the base 2, the pin 14, the metal contact part 3 and the elastic metal part 4 are all hidden and are not easy to be contacted, so that the safety is higher, and the function of preventing electricity theft is also achieved.

When the end cover 17 needs to be opened, the elastic piece 18 springs the end cover 17 outwards while the second fastening piece 19 is unscrewed, so that the end cover 17 can be quickly pushed open even if the second fastening piece 19 is not completely opened in place; in addition, because the elastic member 18 supports the end cap 17, the end cap 17 does not come into contact with the main body 16 again so that the second fastening member 19 falls into the corresponding through hole again, and thus the efficiency of opening the end cap 17 is high.

In addition, when the end cap 17 is opened, the second portion 182 of the elastic member 18 moves forward to be separated from the circuit board 161, and the detection module on the circuit board 161 detects that the end cap 17 is in the opened state. Thus, when the end cap 17 is opened, for example, when a power stealing event occurs or maintenance is performed, the detection module can detect whether the end cap 17 is opened or not, so that the corresponding event can be further recorded and reported.

Claims

1. The utility model provides an ammeter case, includes base (2) and ammeter (1) that links to each other with base (2), its characterized in that: the ammeter (1) is provided with a first side (11) and a second side (12) which are arranged at intervals, the first side (11) is connected with the base (2) through a plug structure, and the second side (12) is connected with the base (2).

2. An electricity meter box according to claim 1, characterized in that: the inserting structure comprises a convex block (13) and a clamping groove (21) which are matched with each other, the convex block (13) is arranged on one of the first side (11) of the electric meter (1) and the base (2), and the clamping groove (21) is arranged on the other one of the first side (11) of the electric meter (1) and the base (2).

3. An electricity meter box according to claim 2, characterized in that: the first side (11) is the bottom of the electric meter (1), the second side (12) is the top of the electric meter (1), the bump (13) is located at the bottom of the electric meter (1) and extends up and down, the clamping groove (21) is located at the position corresponding to the base (2) and is opened upwards, and the top of the electric meter (1) is connected with the base (2) through a first fastener;

or, first side (11) are the top of ammeter (1), second side (12) are the bottom of ammeter (1), lug (13) are located the top of ammeter (1) and extend from top to bottom, draw-in groove (21) are located the position that base (2) correspond and uncovered downwards, the bottom of ammeter (1) with base (2) link to each other through first fastener.

4. An electricity meter box according to claim 1, characterized in that: one of the second side (12) of the electric meter (1) and the base (2) is provided with a positioning convex part (22), the other one of the second side (12) of the electric meter (1) and the base (2) is provided with a positioning groove (15) matched with the positioning convex part (22), and the second side (12) of the electric meter (1) and the base (2) are connected through a first fastener penetrating through the positioning convex part (22) and the positioning groove (15).

5. An electricity meter box according to claim 1, characterized in that: the back part of the electric meter (1) is provided with a pin (14) inserted into a socket in the base (2), the pin (14) extends out of the electric meter (1), and the part of the pin (14) positioned in the electric meter (1) is connected with the inner wall of the electric meter (1) through a screw.

6. An electricity meter box according to any one of claims 1-5, characterized in that: the electric meter (1) comprises a main body (16), an end cover (17) and an elastic piece (18), wherein the end cover (17) can be opened and closed relative to the main body (16), a first side of the elastic piece (18) is installed in the main body (16), a second side of the elastic piece (18) is exposed out of the main body (16) and can be abutted against the inner wall of the end cover (17) in a closed state of the end cover (17), and the elastic piece (18) has a tendency of acting forwards on the end cover (17) to flick the end cover (17).

7. An electricity meter box according to claim 6, characterized in that: the end cover (17) is internally provided with a convex rib (171) extending towards the elastic piece (18), and when the end cover (17) is in a closed state, the convex rib (171) is abutted against the second side of the elastic piece (18).

8. An electricity meter box according to claim 6, characterized in that: the main body (16) is provided with a port (162), the end cover (17) is used for covering the port (162), one side of the end cover (17) is rotatably connected with the main body (16) and can be opened or closed relative to the main body (16), and the end cover (17) is connected with the main body (16) through a second fastening piece (19).

9. An electricity meter box according to claim 6, characterized in that: the main body (16) is provided with a circuit board (161), and the circuit board (161) is provided with a detection module for detecting whether the end cover (17) is opened or not relative to the main body (16);

the elastic member (18) includes a ring-shaped first portion (181) attached to the circuit board (161), a columnar second portion (182) extending forward and backward, and a first elastic connecting wall (183) connecting the first portion (181) and the second portion (182), the first elastic connecting wall (183) having a tendency to support the second portion (182) forward so that the second portion (182) has a spring-open end cap (17);

the second part (182) has at least two states, when the end cover (17) is in a closed state, the top end of the second part (182) is abutted against the inner wall of the end cover (17), and the bottom end of the second part (182) is positioned in the first part (181) and connected with the circuit board (161) so that the detection module on the circuit board (161) detects that the end cover (17) is in the closed state;

when the end cover (17) is in an open state, the bottom end of the second part (182) is separated from the circuit board (161) so that the detection module on the circuit board (161) detects that the end cover (17) is in the open state.

10. An electricity meter box according to any one of claims 1-5, characterized in that: the electric meter (1) comprises a main body (16), a key (200) arranged on the main body (16), and a circuit board (161) which can be triggered by the key (200);

the main body (16) is provided with a through hole which is through from front to back, an extending part (165) which extends backwards and an annular limiting part (166) which is connected with the extending part (165) and extends radially are formed at the through hole;

the key (200) comprises a pressing piece (201) extending into the through hole and an elastic triggering part (202) abutting against the bottom of the pressing piece (201), the elastic triggering part (202) has a tendency of supporting the pressing piece (201) forwards to disconnect the electric connection with the circuit board (161), and under the action of external force, the pressing piece (201) can act on the elastic triggering part (202) to enable the elastic triggering part (202) to be electrically connected with the circuit board (161).

11. An electricity meter box according to claim 10, characterized in that: the pressing piece (201) is a T-shaped supporting column, the supporting column is provided with at least two elastic clamping feet (201a) which are arranged oppositely at the rear part of the supporting column, each elastic clamping foot (201a) penetrates through the annular limiting part (166) and is buckled on the rear surface of the annular limiting part (166), and the elastic clamping feet (201a) are used for abutting against the elastic triggering part (202).

12. An electricity meter box according to claim 10, characterized in that: the elastic trigger part (202) comprises a ring-shaped first area (202a) connected to the circuit board (161), a columnar second area (202b) extending back and forth, and a second elastic connecting wall (202c) connecting the first area (202a) and the second area (202b), wherein the second elastic connecting wall (202c) has the tendency of supporting the second area (202b) forwards so that the second area (202b) is away from the circuit board (161);

the second area (202b) has at least two states, and when the pressing piece (201) acts on the elastic triggering part (202) backwards, the bottom end of the second area (202b) triggers the circuit board (161);

when the pressing piece (201) is not stressed, the bottom end of the second area (202b) is separated from the circuit board (161) and does not trigger the circuit board (161);

a fixing part (167) extending backwards is arranged behind the annular limiting part (166), so that a gap between the annular first area (202a) and the columnar second area (202b) extending forwards and backwards can be sleeved on the fixing part (167).